From loose floorboards to mold, a flood can damage your home in many ways. But, before you re-enter your house to survey the damage, be sure to walk around and visually inspect the property for structural damage, and check for downed power lines or gas leaks, recommends Ready.gov. Do not enter the home if you have any doubts on whether it's safe to do so.

Here are some examples of damage you may find at your home after a flood has occurred:

Structural and electrical damage

Floods can cause structural damage, such as loose or buckling floors and roof or foundation cracks, says Ready.gov. You may also notice broken or frayed electrical wires in your home after a flood. If you or your clothes are wet, or if any wires are wet, avoid touching outlets, switches and the electrical box, and have an electrician inspect the wiring.

Appliance damage

The appliances in your home, including the heating, ventilation and air conditioning system, water heaters or refrigerators, can be compromised by flood water. If you re-enter your home and find that they are wet or damaged, you should turn off the home's electricity, if it's safe to do so, and refrain from using them until they've been inspected by a professional, recommends Ready.gov.

Keep in mind that the food in your home may also spoil due to lack of refrigeration from a power outage, or from encountering with flood water. Be sure to throw away items that have produced mold or emit a foul odor. The Centers for Disease Control and Prevention (CDC) states that if you doubt the quality of any food items, you should throw them away.

Mold and mildew

The Federal Emergency Management Agency (FEMA) notes that mold can begin to grow on any damp surface within 24 to 48 hours. This means that in addition to building materials, such as drywall, flooring and insulation, your personal property —such as clothing and furniture —can be affected by mold after a flood. One way to help prevent the growth and spread of mold is to dry out your home and belongings as soon as possible. Open the windows and, if an electrician has determined that it's safe to use the electricity, use fans and dehumidifiers to help dry out the house, recommends the CDC.

Damage to septic and well water systems

Septic tank filters can become clogged with debris after a flood and affect its ability to accept water, says the Environmental Protection Agency (EPA). Plan to have it inspected and tested as soon as possible after a flood. Flood water can also carry sediment that may get into wells and contaminate drinking water, adds the EPA. Be sure to have your water tested and, if needed, treated, before drinking it.